2. 外语
  3. One day we all may find it useful to have a(n) ______ for sending documents, writing any pictures across the telephone lines.

One day we all may find it useful to have a(n) ______ for sending documents, writing any pictures across the telephone lines.

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问题 One day we all may find it useful to have a(n) ______ for sending documents, writing any pictures across the telephone lines.
选项 A、receiver
B、echo
C、extension
D、facility
答案D
解析 句意：有朝一日我们会发现，拥有一个能通过电话线发送信息、绘制图片的设备是非常有用的。facility意为“设备”；receiver意为“电话听筒”；echo意为“回声；回音”；extension意为“分机”。
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